<form action="google.com" method="post">
	<select name="sel" id="select" multiple="multiple">
		<option value="1" disabled="disabled">111</option>
		<optgroup label="disabled OPTGROUP" disabled="disabled">
			<option value="2">2222</option>
			<option value="3">3333</option>
		</optgroup>
	</select>
</form>